CN100529955C - Projector - Google Patents

Abstract

The invention relates the projector (1), comprises shell (2), top part (21A), and top opening part (261A), cover (27), and cover open and close part (26). The cover open and close part (26) comprises adjoiner (2623A) connected with cover (27) by protrusion (272), and slide block part (262) which can move between bonding station (P1) and non bonding station (P2). On the slide block part (262) there is dip face (2623C), which is connected with protrusion (272) at non bonding station (P2), and inclines along the moving direction at bonding station (P1).

Description

Projector

Technical field

The present invention relates to projector.

Background technology

In the past, known possessed light supply apparatus and took in the configuration light supply apparatus in the external shell of inside, and the projector of enlarging projection is carried out in modulation from the emitted light beam of light supply apparatus.

And, in such projector, adopt following structure: the position corresponding to light supply apparatus on external shell forms opening, with light cover (lid) capping opening, make it simultaneously freely with respect to the external shell mounting or dismounting, make when light supply apparatus arrival during the life-span etc., can take off light supply apparatus and replace (for example, reference literature 1: the spy opens the 2003-43583 communique).

Projector described in the document 1 on external shell, is equipped with: lever locked, and it engages with the 2nd junction surface that is formed at light cover and can move; The 1st loading unit, it loads light cover, so that the engagement state of the 2nd junction surface and lock operation bar obtains removing; With the 2nd loading unit, it loads light cover, makes when the engagement state of the 2nd junction surface and lock operation bar obtains removing, and be maintained the arrested state of retainer, described retainer makes light cover be stopped at external shell with the state of opening a little.By above formation, can implement the replacement operation of light supply apparatus simply.

, the projector described in the document 1 need install lever locked, the 1st loading unit for external shell, reach the 2nd loading unit etc., its numerous and diverseization easy to manufacture.Therefore, require a kind ofly to make the mounting or dismounting with respect to external shell of light cover simple, and the technology that just can realize with simple structure.

Summary of the invention

Main purpose of the present invention is to provide a kind of and makes the mounting or dismounting with respect to external shell of lid simple, and the projector that just can realize with simple structure.

Projector of the present invention, it possesses light supply apparatus and takes in configuration aforementioned lights source apparatus in the external shell of inside, and modulation is carried out enlarging projection from the emitted light beam of aforementioned light supply apparatus, it is characterized in that:, forming the end face peristome with corresponding position, the position of aforementioned lights source apparatus at the top part of aforementioned external shell; The cover body opening/closing portion that possesses lid that can the aforementioned end face peristome of capping and aforementioned lid is installed freely for aforementioned top part mounting or dismounting; On aforementioned lid, form copulational protuberance, it under mounted state, is charged in aforementioned external shell inside by aforementioned end face peristome with respect to aforementioned top part at aforementioned lid; Aforementioned cover body opening/closing portion, possesses the joint moving part, it constitutes the inside surface that is installed on aforementioned top part, and have a junction surface that engages with aforementioned copulational protuberance, and can bonding station that aforementioned junction surface and aforementioned copulational protuberance engage, and the unengaged position that do not engage of aforementioned junction surface and aforementioned copulational protuberance between move; On aforementioned joint moving part, form and engage the moving part dip plane, it is slidably connected to aforementioned copulational protuberance when aforementioned joint moving part moves to aforementioned unengaged position, and with respect to the moving direction plane orthogonal that moves to aforementioned unengaged position, along with tilting to the direction opposite with aforementioned moving direction towards aforementioned top part side.

At this,,, then can adopt the slide mobile structure or the structure of rotation etc. as moving structure as long as can between bonding station and unengaged position, move as engaging moving part.

In the present invention, between bonding station and unengaged position, move, lid is installed and removed with respect to top part (cover body opening/closing portion) by making the joint moving part.Thus, only will engage moving part and be installed in the mounting or dismounting that just can carry out lid on the external shell, and can simplify its structure with respect to external shell.

In addition, engaging on the moving part, forming and engage the moving part dip plane, its with respect to the moving direction plane orthogonal, along with tilting to the opposite direction of the moving direction when engaging moving part and move to unengaged position towards the top part side.Thus, when making the joint moving part move to unengaged position, engage the moving part dip plane and can be slidably connected to the copulational protuberance of lid and push the copulational protuberance of lid, thereby lid is lifted to the top part side.Therefore, only, just can realize removing the engagement state of lid and external shell (junction surface) and the structure that lid is lifted with engaging 1 member of moving part.

Thereby, the mounting or dismounting with respect to external shell of lid are simplified, and just can be realized with simple structure, can reach purpose of the present invention.

In projector of the present invention, preferred: as on aforementioned copulational protuberance, to form corresponding to aforementioned joint moving part dip plane and be slidably connected to the projection dip plane of aforementioned joint moving part dip plane.

According to the present invention, because on copulational protuberance, also form corresponding to the projection dip plane that engages the moving part dip plane, so can make the projection dip plane when moving part moves to unengaged position and engage the moving part dip plane and slip making to engage, can successfully implement to engage the mobile of moving part.Therefore, for external shell, can successfully implement to take off the operation of lid.

In projector of the present invention, preferred: aforementioned cover body opening/closing portion possesses loaded members, and it is equipped between aforementioned top part and the aforementioned joint moving part, and in aforementioned bonding station side aforementioned joint moving part is loaded.

In the present invention, because cover body opening/closing portion possesses in the bonding station side to engaging the loaded members that moving part loads, so the joint moving part is loaded in the bonding station side always.Thus because engage moving part among the moving of bonding station side or these 2 directions of unengaged position side, loaded members is implemented to the moving of bonding station side, so moving only enforcement of armrest gets final product to moving of unengaged position side.Therefore, for external shell mounting or dismounting lid the time, among the moving of aforementioned 2 directions that engage moving part, moving only enforcement of armrest get final product to moving of unengaged position side, can implement the mounting or dismounting of lid simply and operate.

In projector of the present invention, preferably: aforementioned joint moving part, possess the tabular joint moving part main body that is roughly parallel to aforementioned top part and uprightly be arranged at the plate face of aforementioned joint moving part main body and roughly be orthogonal to the press section of the moving direction of aforementioned joint moving part; On the side surface part of the aforementioned top part that intersects at aforementioned external shell, be formed for making the aforementioned behaviour's functional hole that moving part moves to aforementioned unengaged position that engages in position with the interference of aforementioned press section planarity.

In the present invention, engaging moving part formation press section, on the side surface part of the top part that intersects at external shell, form behaviour's functional hole.Thus, feed external shell inside by the rod member of screwdriver etc. being inserted by behaviour's functional hole, and the press section is pushed, can make the joint moving part move to unengaged position simply with the front end of aforementioned rod member from external shell.

In addition, because operation is formed on the side surface part that intersects at top part with the hole, so compare, can reduce the amount that drains to the projector outside when driving from the light leak of light supply apparatus by behaviour's functional hole in projector with for example operating the formation that is formed at top part with the hole.Therefore, can suppress to give influence with projected image, can make the beholder watch projected image well because of light leak.

In projector of the present invention, preferred: aforementioned cover body opening/closing portion possesses the aforementioned end face peristome periphery that is formed at aforementioned top part, the base portion that is used to install aforementioned joint moving part; On aforementioned base portion, form the 1st rib spare, it is to roughly the direction of quadrature is outstanding with aforementioned top part, and overlooks and be the frame shape; On the inside surface of aforementioned lid, form the 2nd rib spare overlook to the frame shape, it is to roughly the direction of quadrature is outstanding with aforementioned lid, and with aforementioned 1st rib spare carries out chimeric with respect to aforementioned top part under the mounted state at aforementioned lid; On aforementioned the 1st rib spare and aforementioned the 2nd rib spare, form chocking construction, it carries out stop to the shift position with respect to aforementioned lid under the state that is located in aforementioned unengaged position at aforementioned joint moving part, aforementioned top part.

In the present invention, installing with respect to top part under the state of lid, cover body opening/closing portion overlook the 1st rib spare for the frame shape, and the 2nd rib spare of overlooking to the frame shape of lid carry out chimeric.Therefore, become the structure of coming when driving the light leak from light supply apparatus to cover, can reduce the amount that drains to the projector outside by the end face peristome in projector by the 1st rib spare and the 2nd rib spare.Therefore, can suppress to give influence with projected image, can make the beholder watch projected image well because of light leak.

In addition because on the 1st rib spare and the 2nd rib spare, be formed with chocking construction, so by chocking construction can keep engage moving part be located in unengaged position, lid with respect to top part a little state of opening.Therefore, in projector is (for example to hang vertical attitude, the bottom surface of projector is connected to the state of the abutted surface of ceiling etc. mutually) situation under, make engage moving part move to unengaged position, when taking off lid with respect to top part, lid can not drop, and can implement the operation of taking off of lid well.

And then, because by on the 1st rib spare and the 2nd rib spare, forming chocking construction, can cover light leak by the 1st rib spare and the 2nd rib spare as described above, so compare with the formation that for example on other positions, forms chocking construction, can reduce the amount that drains to the light leak of projector outside by chocking construction (for example, recess or hole).

In projector of the present invention, preferred: aforementioned cover body opening/closing portion possesses the aforementioned end face peristome periphery that is formed at aforementioned top part, the base portion that is used to install aforementioned joint moving part; Aforementioned base portion, by protrude in overlooking to the 1st rising portions of frame shape and being connected in aforementioned the 1st rising portions and planarity ground covers aforementioned end face peristome and constituted with the stage portion of aforementioned top part almost parallel ground extension of aforementioned external shell private side from aforementioned end face peristome periphery; Aforementioned stage portion, have and be formed at and the little step peristome of corresponding position, the position of aforementioned lights source apparatus and the aforementioned end face peristome of open area ratio and outstanding and round the 1st rib spare overlooked of aforementioned step peristome for the frame shape to the outside of aforementioned external shell; On the inside surface of aforementioned lid, formation is overlooked and is the 2nd rising portions of frame shape and the 2nd rib spare, it protrudes in and the aforementioned lid direction of quadrature roughly, and with aforementioned 1st rising portions and aforementioned 1st rib spare respectively carries out chimeric with respect to aforementioned top part under the mounted state at aforementioned lid.

According to the present invention, to install with respect to top part under the state of lid, overlooking of cover body opening/closing portion carried out chimeric respectively for the 1st rising portions of frame shape and the 2nd rising portions and the 2nd rib spare overlooked to the frame shape of the 1st rib spare and lid.Therefore, by the 1st rib spare and the 2nd rib spare and the 1st rising portions and the 2nd rising portions, can realize that the light leak from light supply apparatus carries out dual structure of covering when driving in projector.Therefore, can prevent that light from draining to the projector outside by step peristome and end face peristome.

Description of drawings

Fig. 1 is the stereographic map of outward appearance of the projector of expression present embodiment.

Fig. 2 is the stereographic map of outward appearance of the projector of expression aforementioned embodiments.

Fig. 3 is the figure that the inside of the projector of expression aforementioned embodiments constitutes.

Fig. 4 is the stereographic map with respect to the connected structure of the top part of aforementioned embodiments of expression light cover.

Fig. 5 is the stereographic map with respect to the connected structure of the top part of aforementioned embodiments of expression light cover.

Fig. 6 is a stereographic map of observing the light cover switching portion of aforementioned embodiments from upper side.

Fig. 7 is the stereographic map of structure of the slide section of expression aforementioned embodiments.

Fig. 8 is the stereographic map of structure of the light cover of expression aforementioned embodiments.

Fig. 9 is the stereographic map of structure of the copulational protuberance of expression aforementioned embodiments.

Figure 10 A and Figure 10 B are the figure with respect to the opening and closing operations of the light cover switching portion of aforementioned embodiments that is used for illustrating respectively light cover.

Figure 11 is the figure with respect to the opening and closing operations of the light cover switching portion of aforementioned embodiments that is used to illustrate light cover.

Embodiment

Below, with reference to the accompanying drawings one embodiment of the present invention are described.

(1. outward appearance constitutes)

Fig. 1 and Fig. 2 are the stereographic maps of the outward appearance of expression projector 1.Particularly, Fig. 1 is a stereographic map of observing projector 1 from the front upper side.Fig. 2 is a stereographic map of observing projector 1 from back side upper side.

Projector 1 forms optical image according to image information modulation from the light beam that light source penetrates, and the optical image of enlarging projection after forming is on screen (diagram slightly).This projector 1 as shown in Fig. 1 or Fig. 2, possesses roughly rectangular-shaped external shell 2, reaches the projecting lens 3 (Fig. 1) as the projecting optical device that exposes from this external shell 2.

Projecting lens 3 constitutes as the group lens of taking in a plurality of lens in the lens barrel of tubular, and the optical image modulated according to image information by the apparatus main body of projector 1 of enlarging projection.

External shell 2 is plastic housings, takes in the apparatus main body of projector 1.This external shell 2, as as shown in Fig. 1 or Fig. 2, possess: the upper casing 21 of the top part of cladding system main body, the lower casing 22 of the bottom part of cladding system main body, the shell on the back 24 (Fig. 2) of the fore shell 23 (Fig. 1) of the previous section of cladding system main body and the back portion of cladding system main body.

Upper casing 21 as shown in Fig. 1 or Fig. 2, comprises top part 21A, side surface part 21B, 21C, the 21D of back side portion, front face 21E and constitutes, and they form a part, and the part of front at a part, the back side of end face, the side of external shell 2 respectively.

Top part 21A as shown in Fig. 1 or Fig. 2, has the essentially rectangular of overlooking shape, and from overlook substantial middle part to front face side, side, and rear side crooked lentamente, and have convex curve surface shape.

In this top part 21A, from front side, be forward observation on the part of right side, as shown in Fig. 1 or Fig. 2, be formed with 3 peristome 2iA1.And 3 peristome 21A1 expose focusing adjustment, the zoom adjustment that can operate projecting lens 3, be used to implement the projection image of projection on screen (diagram slightly), a part that reaches the various knob 3A of projected position adjustment.

In addition, in this top part 21A, on the rear side of peristome 21A1,, be provided with the guidance panel 25 of the starting adjustment operation of implementing projector 1 in the mode of direction extension to the left and right as shown in Fig. 1 or Fig. 2.If the suitable action button 251 of push panel 25, then be installed in the not shown circuit substrate that is disposed at action button 251 inside on touch sensitive switch contact, the operation of expection becomes possibility.In addition, on the aforementioned circuit substrate, not shown LED (LightEmitting Diode, light emitting diode) is installed, corresponding to predetermined operation and luminous.

In addition, the circuit substrate of aforesaid guidance panel 25 is electrically connected with control basal plate (diagram slightly), follows the operation signal of pressing in action button 251, outputs to control basal plate.

And then, in this top part 21A, observe on the left part of guidance panel 25 from front side, as shown in Fig. 1 or Fig. 2, be formed with and overlook rectangular-shaped end face peristome 261A.And on top part 21A, mounting or dismounting are equipped with the light cover 27 as the lid of overlooking rectangular plate shape of capping end face peristome 261A freely.And, by taking off light cover 27, can replace the light supply apparatus described later of the inside that is disposed at external shell 2 from top part 21A.

In addition, about the connected structure with respect to top part 21A of light cover 27, narration in the back.

Side surface part 21B, roughly sagging as shown in Fig. 1 or Fig. 2 from the long side direction ora terminalis of top part 21A, and mode projecting direction two ora terminalis face side and the rear side bending forward to have convex surface, thereby be connected with 21D of back side portion and front face 21E.Though omit concrete diagram, side surface part 21C also has the shape same with side surface part 21B.

Among the side surface part 21B among these side surface part 21B, 21C, on the side,, overlook the roughly otch 21B1 of コ word shape forwardly from descending ora terminalis to be formed with to upper side as shown in Fig. 1 or Fig. 2.

The 21D of back side portion, roughly sagging from the short side direction rear side ora terminalis of top part 21A as shown in FIG. 2, form otch 21D1 from following ora terminalis to upper side, have and overlook roughly コ word shape.

Front face 21E, roughly sagging from the short side direction front side ora terminalis of top part 21A as shown in FIG. 1, form otch 21E1 from following ora terminalis to upper side, have and overlook roughly コ word shape.

Lower casing 22, as 1 or Fig. 2 as shown in, comprise bottom surface sections 22A, side surface part 22B, 22C, the 22D of back side portion (Fig. 2), and front face 22E (Fig. 1) and constituting, they form a part, and the part of front at a part, the back side of bottom surface, the side of external shell 2 respectively.

Bottom surface sections 22A though omit concrete diagram, is made of the tabular surface of essentially rectangular shape.And, on this bottom surface sections 22A, be formed with many shanks of the abutted surface that is connected to desk etc. mutually and be used for the cooling air of outside is imported to the air entry of projector 1 inside.

Side surface part 22B, as as shown in Fig. 1 or Fig. 2, uprightly be provided with upward from long side direction two ora terminalis of bottom surface sections 22A, and mode projecting direction two ora terminalis face side and the rear side bending forward to have convex surface, thereby be connected with 22D of back side portion and front face 22E.

In these side surface part 22B, on the front side of the side surface part 22B in left side,, be formed with otch 22B1 from last ora terminalis to lower side as shown in Fig. 1 or Fig. 2 from the front side observation.And under the state that assembles upper casing 21 and lower casing 22, otch 21B1 is connected with otch 22B1, is formed for the air of external shell 2 inside is discharged to the outside exhausr port of overlooking the essentially rectangular shape 28.And, on this exhausr port 28, as as shown in Fig. 1 or Fig. 2, be equipped with and will be rectified into the window shutter 81 of predetermined direction from extraction fan (diagram the is slightly) air of being discharged, described extraction fan is disposed at external shell 2 inside, also will be discharged to the outside at the air after projector's 1 inner intensification.

The 22D of back side portion as shown in FIG. 2, uprightly is provided with upward from the short side direction rear side ora terminalis of bottom surface sections 22A, and forms otch 22D1 from last ora terminalis to lower side, has and overlooks roughly コ word shape.And, by the コ word shape inside part of the 21D of back side portion of upper casing 21, and the コ word shape inside part support fixation shell on the back 24 of the 22D of back side portion of lower casing 22.

At the 22D of this back side portion, be that rear side is observed on the part of right side from lower side, as shown in FIG. 2, the inboard of recessed external shell 2 divides formation rectangular-shaped opening 22D2 in the bottom.And inner input connector (inlet connector) (diagram slightly) exposes by this opening 22D2, and the electric power of outside can be offered the apparatus main body of projector 1.

Front face 22E, as shown in FIG. 1, the short side direction front side ora terminalis uprightly setting upward from bottom surface sections 22A forms otch 22E1 from last ora terminalis to lower side, has the コ of overlooking word shape.And, by the コ word shape inside part of the front face 21E of upper casing 21, and the コ word shape inside part support fixation fore shell 23 of the front face 22E of lower casing 22.

Fore shell 23 as shown in FIG. 1, has the substantially elliptical shape that direction is to the left and right extended, and by being connected with upper casing 21 and lower casing 22, and the opening portion that sealing is formed by front face 21E, 22E.

In this fore shell 23, on the part of right side, as shown in FIG. 1, the opening 231 that forms the circular shape is divided in the inboard of recessed external shell 2 in the bottom from forward observation.And this opening 231 exposes the fore-end of projecting lens 3.

In addition, in this fore shell 23, on length direction substantial middle part, as shown in FIG. 1, be formed with remote control and be subjected to optical window 232.And, in the inboard that this remote control is subjected to optical window 232, dispose the remote control light-receiving module (diagram slightly) of reception from the operation signal of telepilot (diagram is slightly).

In addition, in telepilot, be provided with and be arranged at aforesaid guidance panel 25 starting switch, adjust same element such as switch, when remote controller, infrared signal corresponding to this operation is just exported away from telepilot, infrared signal is subjected to optical window 232 and is accepted by the remote control light-receiving module by remote control, and is handled by control basal plate (diagram slightly).

Shell on the back 24 as shown in FIG. 2, has at the upwardly extending substantially elliptical shape of right and left, and by being connected with upper casing 21 and lower casing 22, and enclosed shape is formed in the opening portion of the 21D of back side portion, 22D.

In this shell on the back 24, observe on left part from rear side, as shown in FIG. 2, be formed with recessed external shell 2 the inboard overlook rectangular-shaped recess 241.

On this recess 241, as shown in FIG. 2, be formed with a plurality of holes 242, by these a plurality of holes 242, a plurality of splicing ears 243 that are used to import picture signal from the electronic equipment of outside, voice signal etc. are exposed to the outside.In addition, in the inboard of this shell on the back 24, dispose interface board (diagram slightly) to handling from the signal of splicing ear 243 inputs.

In addition, the aforementioned interface substrate is electrically connected with control basal plate (diagram slightly), and the signal after being handled by interface board outputs to control basal plate.

In addition, in this shell on the back 24, observe on the part of the right side of recess 241, as shown in FIG. 2, be formed with the speaker hole 244 that is used for to projector's 1 outside output sound from rear side.In the inboard of this speaker hole 244, dispose the loudspeaker that sends predetermined sound by control basal plate (diagram slightly) control.

And then, in this shell on the back 24, observe on the part of the upper left side of speaker hole 244 from rear side, as shown in FIG. 2, form and be connected with the inside of external shell 2, be used to remove the behaviour's functional hole 245 with respect to the engagement state of top part 21A of light cover 27.

(2. inner formation)

Fig. 3 is the figure of the inside formation of expression projector 1.

In the inside of external shell 2, as shown in FIG. 3, take in the apparatus main body of projector 1.This apparatus main body, comprise along the length direction of external shell 2 to the left and right direction extend, forwards extend the end of an end overlooks the optical unit 4 of L word shape roughly and constitutes.

In addition, though the diagram of omission, apparatus main body except optical unit 4, also possesses: control basal plate, and it is disposed at the upper side of optical unit 4, and projector's 1 integral body is controlled; Power supply unit, it is disposed at along the position of the front of external shell 2 at the L of optical unit 4 word inside part, and the electric power that will supply with from the outside supplies to each member of formation; Cooling unit that cools off with each member of formation etc. to projector 1 inside.

(the 3. detailed formation of optical unit)

Optical unit 4 under by aforementioned control basal plate control, forms image light according to image information.This optical unit 4 as shown in FIG. 3, possesses: light supply apparatus 41, even lamp optical system 42, color separation optical system 43, relay optical system 44, optical devices 45 and take in the optical component casing 46 of these opticses 42～45 in inside.

Light supply apparatus 41 under by the control of aforementioned control basal plate, is lighted and is penetrated directional lights to even lamp optical system 42.This light supply apparatus 41 as shown in FIG. 3, possesses: as the illuminator 411 of radiation light source, reverberator 412, parallelization concavees lens 413 and take in these each members 411～413 in the Lamp housing 414 of inside.And the radial light beam from illuminator 411 penetrates through reverberator 412 reflections, becomes directional light by parallelization concavees lens 413.In addition, as illuminator 411, multipurpose high-pressure mercury vapor lamp, metal halide lamp, Halogen lamp LED etc.In addition,, be not limited to off-axis paraboloids and ellipsoids mirrors, also can adopt paraboloidal mirror as reverberator 412.In this case, can omit parallelization concavees lens 413.

Lamp housing 414, though omit concrete diagram, but by supporting light sources lamp 411, reverberator 412, and parallelization concavees lens 413 and with these each member 411～413 incorporate inner cans, with on the bottom surface portions that is installed on lower casing 22, be connected with optical component casing 46 simultaneously, and will constitute by the outer casing that aforementioned inner can make each member 411～413 incorporate lamp unit mounting or dismounting be supported in the precalculated position freely.

And, when replacing light supply apparatus 41, taking off with respect to top part 21A under the state of above-mentioned light cover 27, replace the aforementioned lamps unit.

Evenly lamp optical system 42 is to be used to make the light beam that penetrates from light supply apparatus 41, the optical system of roughly throwing light on equably on the image forming area of the liquid crystal panel described later that constitutes optical devices 45.This even lamp optical system 42 as shown in FIG. 3, possesses: the 1st lens arra 421, the 2 lens arras 422, polarization conversion device 423 and overlapping lens 424.

The 1st lens arra 421 has lenslet and is arranged in rectangular formation, and described lenslet is observed the profile with essentially rectangular shape from optical axis direction.Each lenslet will be divided into the multi beam segment beam from the light beam that light supply apparatus 41 penetrates.

The 2nd lens arra 422 has and the roughly same formation of the 1st lens arra 421, has lenslet and is arranged in rectangular formation.The 2nd lens arra 422, have with overlapping lens 424 together, make the picture of each lenslet of the 1st lens arra 421 be imaged on function on the liquid crystal panel described later of optical devices 45.

Polarization conversion device 423 is disposed between the 2nd lens arra 422 and the overlapping lens 424, will be transformed into roughly a kind of polarized light from the light of the 2nd lens arra 422.

Particularly, be transformed into the roughly each several part light beam of a kind of polarized light by polarization conversion device 423, final roughly overlapping on the liquid crystal panel described later of optical devices 45 by overlapping lens 424.In the projector of the liquid crystal panel that has adopted the modulated polarized light type because can only utilize a kind of polarized light, so can only be used to from send randomness polarized light light supply apparatus 41 light roughly half.Therefore,, will be transformed into roughly a kind of polarized light, improve utilization ratio at the light of optical devices 45 from the ejaculation light of light supply apparatus 41 by adopting polarization conversion device 423.

Color separation optical system 43, as shown in FIG. 3, possess 2 dichronic mirrors 431,432 and catoptron 433, have by dichronic mirror 431,432 and will be separated into the function of the coloured light of red, green, blue 3 looks from the multi beam segment beam that even lamp optical system 42 penetrates.

Relay optical system 44, as shown in FIG. 3, possess light incident side lens 441, relay lens 443, and catoptron 442,444, have the function of the liquid crystal panel that red light described later that the red light of will be separated by color separation optical system 43 is directed to optical devices 45 uses.

At this moment, in the dichronic mirror 431 of color separation optical system 43, the blue light among the light beam of even lamp optical system 42 ejaculations becomes sub reflector, red light composition and the transmission of green light composition simultaneously.By the blue light of dichronic mirror 431 reflection, by catoptron 433 reflections, and the liquid crystal panel of using by the blue light described later that field lens 425 arrives optical devices 45.This field lens 425 will become with respect to the parallel light beam of its central shaft (chief ray) from the each several part optical beam transformation that the 2nd lens arra 422 penetrates.The field lens 425 of the light beam light incident side of the liquid crystal panel that the green light that is arranged at other is used with, red light also is same.

Cross in transmission among the red light and green light of dichronic mirror 431, green light is by dichronic mirror 432 reflection, and the liquid crystal panel of using by the green light described later that field lens 425 arrives optical devices 45.On the other hand, red light transmission dichronic mirror 432 and by relay optical system 44, and then the liquid crystal panel of using by the red light described later that field lens 425 arrives optical devices 45.In addition, adopting relay optical system 44 in red light, is because the length of the light path of red light is longer than the length of the light path of other coloured light, prevents the cause of reduction of the utilization ratio of the light that causes because of dispersing of light etc.That is be, in order to incide the segment beam of light incident side lens 441, and intactly to pass to field lens 425.

Optical devices 45, as shown in FIG. 3, possess: (establishing the liquid crystal panel that red light uses is 451R for 3 liquid crystal panels 451, if the liquid crystal panel that green light is used is 451G, if the liquid crystal panel that blue light is used is 451B), be disposed at the light beam light incident side of these liquid crystal panels 451 and light incident side polarization plates 452 and the emitting side polarization plates 453 and the cross colour splitting prism 454 of light beam emitting side respectively.

Liquid crystal panel 451, though omit concrete diagram, but have in a pair of transparent glass substrate and seal the formation of enclosing as the liquid crystal of electro-optical substance, and according to drive signal from aforementioned control basal plate output, control the state of orientation of foregoing liquid crystal, change from the polarization axle of the light beam of light incident side polarization plates 452 ejaculations.

Light incident side polarization plates 452, make the polarization direction become roughly unidirectional each coloured light incident by polarization conversion device 423 is consistent, among the light beam of institute's incident, only make with by polarization conversion device 423 the roughly unidirectional polarized light transmission of polarization axle of consistent light beam, and absorb other light beams.This light incident side polarization plates 452 has the formation of for example pasting polarizing coating on light-transmitting substrates such as sapphire glass or crystal.

Emitting side polarization plates 453, be the formation roughly same with light incident side polarization plates 452, among the light beam emitted, only make the light beam transmission that has with the polarization axle of the axis of homology quadrature of the light beam of light incident side polarization plates 452, and absorb other light beams from liquid crystal panel 451.

And, by above-mentioned liquid crystal panel 451, light incident side polarization plates 452, and emitting side polarization plates 453 constitute optic modulating device, and by this optic modulating device according to the image information modulated beam of light, thereby form optical image.

Cross colour splitting prism 454 is will be subjected to modulating the optical image that forms from every coloured light that aforementioned optic modulating device penetrates to synthesize and the optical element of formation coloured image.This cross colour splitting prism 454 forms and to overlook roughly square shape with what 4 right-angle prisms fit together, and on the interface that right-angle prism is fit together each other, forms 2 layers of dielectric multilayer film.These dielectric multilayer films make the coloured light transmission of passing through emitting side polarization plates 453 from liquid crystal panel 451G ejaculation, and the coloured light of emitting side polarization plates 453 is passed through in reflection from liquid crystal panel 451R, 451B ejaculation.So, the light compositing of all kinds that will modulate by each optic modulating device and form image.

(the 4. connected structure with respect to top part of light cover)

Fig. 4 and Fig. 5 are the stereographic maps with respect to the connected structure of top part 21A of expression light cover 27.Particularly, Fig. 4 is the figure that observes the state that light cover 27 engages with respect to top part 21A from the inner surface side of top part 21A.Fig. 5, the exploded perspective view with respect to the connected structure of top part 21A of expression light cover 27.In addition, in Fig. 4 and Fig. 5, the left side is the rear side of projector 1, and the right side is the front face side of projector 1.

On top part 21A, as shown in Fig. 4 or Fig. 5, form have end face peristome 261A (Fig. 1, Fig. 2), and the detachable light cover switching portion 26 that light cover 27 is installed freely as cover body opening/closing portion.

(structure of 4-1. light cover switching portion)

Fig. 6 is a stereographic map of observing light cover switching portion 26 from upper side.In addition, in Fig. 6, the left side is the rear side of projector 1, and the right side is the front face side of projector 1.

Light cover switching portion 26 as shown in Fig. 4～Fig. 6, possesses: base portion 261, and as the slide section 262 (Fig. 4, Fig. 5), loaded members 263 (Fig. 4, Fig. 5) and a pair of fixed component 264 (Fig. 4, Fig. 5) that engage moving part.

Base portion 261 as shown in Fig. 4～Fig. 6, is the part that is integrally formed in top part 21A; Have 1st rising portions 2611 of overlooking essentially rectangular frame shape roughly sagging, and be connected with the 1st rising portions 2611 and cover the mode of end face peristome 261A and the stage portion 2612 of top part 21A almost parallel ground extension with plane earth from end face peristome 261A peripheral part; Has section コ word shape.

On this stage portion 2612, as shown in Fig. 4～Fig. 6, with part that the 1st rising portions 2611 of front face side is connected on, be formed with a pair of the 1st stop recess 2612A that the described later a pair of teat that can make light cover 27 inserts.These the 1st stop recesses 2612A as at Fig. 4～shown in Figure 6, forms in the mode that strides across the 1st rising portions 2611 and stage portion 2612 both sides.Therefore, aforesaid a pair of teat is being inserted under the state of a pair of the 1st stop recess 2612A, as fulcrum, light cover 27 can rotate on above-below direction with the cardinal extremity of aforementioned a pair of teat part.

In addition, on the substantial middle part of this stage portion 2612, as as shown in Fig. 4～Fig. 6, be formed with flat shape and the little step peristome 2612B that overlooks the essentially rectangular shape of open area ratio end face peristome 261A corresponding to the aforementioned lamps unit that constitutes light supply apparatus 41.That is, when replacing light supply apparatus 41, taking off under the state of light cover 27,, replacing the aforementioned lamps unit by step peristome 2612B from light cover switching portion 26.

In the peripheral part of this step peristome 2612B, overleaf on the left and right directions of side (length direction of top part 21A) the substantial middle part, as as shown in Fig. 5 or Fig. 6, be formed with light cover 27 can make light cover 27 under the state of light cover switching portion 26 the slotting otch 2612C that feeds external shell 2 inside of copulational protuberance described later is being installed.

And then, in this stage portion 2612, up on the side end face, as shown in FIG. 6, be formed with and uprightly be arranged at upper side and surround step peristome 2612B and the 1st rib spare 2612D that overlooks essentially rectangular frame shape of otch 2612C.

On the inner peripheral surface of the 1st rib spare 2612D, as shown in Fig. 5 or Fig. 6, observe on the end face in left side from rear side, be formed with the 2nd stop recess 2612E that engages with the retention tab of light cover 27.

The 2nd stop recess 2612E, as shown in Fig. 5 or Fig. 6, have from the lower side ora terminalis position of the 1st rib spare 2612D to above-below direction substantial middle part, to the direction of leaving with respect to step peristome 2612B recessed overlook rectangular-shaped.

In addition, upper side at the 2nd stop recess 2612E, as as shown in Fig. 5 or Fig. 6, be formed with avoid when light cover 27 being installed in the light cover switching portion 26, the rectangular-shaped recess 2612F that overlooks that mechanicalness interferes takes place in the copulational protuberance of light cover 27 and the 1st rib spare 2612D.

And then, in this stage portion 2612, on the lower side end face, as as shown in Fig. 4 or Fig. 5, overleaf on the left and right directions of side (length direction of top part 21A) the substantial middle part, be formed be used for to slide section 262, loaded members 263, and the slide block that is provided with of fixed component 264 2612G of portion is set.

Slide block is provided with the 2612G of portion, as shown in Fig. 4 or Fig. 5, comprises rib spare 2612H, loaded members fixed part 2612I, a pair of guide portion 2612J (Fig. 5) and a pair of fixed part 2612K (Fig. 5) and constitute.

Rib spare 2612H, uprightly be arranged at the lower side end face of stage portion 2612, by go up the pair of sidewalls of extending at fore-and-aft direction (short side direction of top part 21A), reach the back face wall that is connected with pair of sidewalls and upward extends and constitute, have the roughly コ word shape of overlooking that surrounds otch 2612C at left and right directions (long side direction of top part 21A).And, in the lower side end face of stage portion 2612, on the コ of rib spare 2612H word shape inside part, be formed with loaded members fixed part 2612I, a pair of guide portion 2612J, and a pair of fixed part 2612K, and be provided with slide section 262, loaded members 263, and fixed component 264.

On the back face wall of this rib spare 2612H,, on the subtend position of the behaviour's functional hole 245 that is formed at shell on the back 24, form the otch 2612H1 that overlooks コ word shape from the lower side ora terminalis to upper side as shown in Fig. 4 or Fig. 5.That is, by behaviour's functional hole 245 and otch 2612H1, external shell 2 is connected with rib spare 2612H inside.

Loaded members fixed part 2612I as shown in Fig. 4 or Fig. 5, uprightly is arranged at the rear side of otch 2612C of the lower side end face of stage portion 2612, and by an end of rear side end portion supports loaded members 263.

A pair of guide portion 2612J, as shown in FIG. 5, in the lower side end face of stage portion 2612, uprightly be provided with in the mode of clamping otch 2612C and loaded members fixed part 2612I from left and right directions (length direction of top part 21A), and have the shape of direction (short side direction of top part 21A) extension forwards, backwards.In addition, in Fig. 5, among a pair of guide portion 2612J, though only illustrate a guide portion 2612J, another guide portion also has same shape.

A pair of fixed part 2612K as shown in FIG. 5, with the mode subtend setting of clamping a pair of guide portion 2612J from left and right directions (length direction of top part 21A), and is spirally connected with a pair of fixed component 264 respectively.In addition, in Fig. 5, among a pair of fixed part 2612K, though only illustrate a fixed part 2612K, another fixed part 2612K also has same shape.

Fig. 7 is the stereographic map of the structure of expression slide section 262.Particularly, Fig. 7 is the figure that observes the slide section 262 shown in Fig. 4 and Fig. 5 from upper side.In addition, in Fig. 7, the left side is the front face side of projector 1, and the right side is the rear side of projector 1.

Slide section 262, at slide block portion 2612G inside is set, be provided with to such an extent that can go up move at fore-and-aft direction (short side direction of top part 21A), and the bonding station P1 that engages with copulational protuberance described later of light cover 27 (with reference to Figure 10 A) and and the asynthetic unengaged position P2 of aforementioned copulational protuberance (with reference to Figure 10 B) between move.This slide section 262, as as shown in Fig. 4, Fig. 5 or Fig. 7, possess: overlook the slide section main body 2621 that rectangular-shaped conduct engages the moving part main body, be formed at slide section main body 2621 the lower side end face press section 2622 and be formed at the bulge 2623 (Fig. 7) of the upper side end face of slide section main body 2621.

In left and right directions (long side direction) end side of slide section main body 2621,, be formed with at fore-and-aft direction (short side direction) and go up pair of tracks (track) the hole 2621A that extends as shown in Fig. 4, Fig. 5 or Fig. 7.And, by utilizing pair of tracks hole 2621A a pair of fixed component 264 is spirally connected with respect to a pair of fixed part 2612K, slide section 262 is configured in slide block portion 2612G inside is set.In addition, because pair of tracks hole 2621A has the upwardly extending shape in front and back, therefore make slide section 262 can move on (short side direction of slide section main body 2621) on the fore-and-aft direction.

Press section 2622 is to make slide section 262 move to the part of front face side (unengaged position P2 side).This press section 2622, as as shown in Fig. 4 or Fig. 5, overlook rectangular-shaped press section main body 2622A by what the rear side ora terminalis from the lower side end face of slide section main body 2621 extended to the lower side, constitute with a pair of additional ribs part 2622B that overlooks triangle of the lower side end face of front face side end face that is connected press section main body 2622A and slide section main body 2621.And, feed rib spare 2612H inside by utilizing behaviour's functional hole 245 and otch 2612H1 that rod member such as screwdriver are inserted from external shell 2, and with the fore-end of aforementioned rod member press section main body 2622A is pushed, slide section 262 moves to front face side (unengaged position P2 side) thus.

Bulge 2623, as shown in FIG. 7, be positioned on left and right directions (long side direction of slide section main body 2621) the substantial middle part of the upper side end face of slide section main body 2621, and have the roughly rectangular shape of direction (short side direction of slide section main body 2621) extension forwards, backwards.Be provided with under the state on the 2612G of portion slide section 262 being arranged on slide block, the left and right directions of bulge 2623 (long side direction of slide section main body 2621) both ends of the surface are contacted with each end face of the subtend of a pair of guide portion 2612J respectively.Therefore, slide section 262 is directed along a pair of guide portion 2612J and go up moves at fore-and-aft direction (short side direction of slide section main body 2621).

And, on slide section 262, as shown in Fig. 4, Fig. 5 or Fig. 7, be formed with the lower side end face that connects slide section main body 2621, and the upper side end face of bulge 2623 overlook rectangular-shaped through hole 2624.

This through hole 2624, as shown in FIG. 7, the 1st through hole 2624A that is positioned at front face side is connected to each other with the 2nd through hole 2624B that is positioned at rear side, thereby forms to such an extent that go up extension at fore-and-aft direction (short side direction of slide section main body 2621).In addition, this through hole 2624, as shown in FIG. 7, the width dimensions of the left and right directions of the 1st through hole 2624A (long side direction of slide section main body 2621) forms greatlyyer than the width dimensions of the left and right directions of the 2nd through hole 2624B, and has the type of overlooking shape.

And, being provided with under the state of the 2612G of portion slide section 262 being arranged at slide block, the 1st through hole 2624A is configured in the corresponding position with otch 2612C.That is, light cover 27 is being installed under the state of light cover switching portion 26, it is logical by otch 2612C and the 1st through hole 2624A the copulational protuberance described later of light cover 27 to be inserted.

In this bulge 2623, the internal perisporium of the front face side of through hole 2624, the recessed front face side of its lower side end wall and have hook shape (with reference to Figure 10 A and Figure 10 B) works as junction surface 2623A.And, light cover 27 being installed under the state of light cover switching portion 26, the copulational protuberance described later of light cover 27 engages in junction surface 2623A.

In addition, the end face of the rear side of the upper side of junction surface 2623A as shown in FIG. 5, becomes from the lower side ora terminalis to the upper side ora terminalis to the oblique dip plane 2623B of front inclination.That is, dip plane 2623B becomes following dip plane: with respect to the direction that moves to unengaged position P2 of slide section 262 (towards the direction of the front face side of projector 1) plane orthogonal, along with tilting to aforementioned moving direction towards top part 21A side.

In addition, in this bulge 2623, a pair of step part between the 1st through hole 2624A and the 2nd through hole 2624B as shown in FIG. 5, becomes the slide section dip plane 2623C that engages the moving part dip plane from the lower side ora terminalis to the upper side ora terminalis to the oblique conduct of back side inclination.Promptly, slide section dip plane 2623C, become following dip plane: with respect to the direction that moves to bonding station P1 of slide section 262 (towards the direction of the rear side of projector 1) plane orthogonal, along with towards top part 21A side and to aforementioned moving direction (with slide section 262 to side that unengaged position P2 moves in the opposite direction) tilt.

And then, in this bulge 2623, on the internal perisporium of the rear side of through hole 2624, as shown in FIG. 7, be formed with the loaded members fixed part 2623D of the other end that uprightly is arranged at front face side and support fixation loaded members 263.That is, be provided with slide section 262, loaded members 263, and fixed component 264 be provided with in slide block under the state of the 2612G of portion, loaded members 263 is by a pair of loaded members fixed part 2612I, 2623D institute support fixation.

In addition, in this bulge 2623, on the internal perisporium of the 2nd through hole 2624B, as shown in FIG. 7, form loaded members assisted parts 2623E in the mode that strides across left and right directions (long side direction of slide section main body 2621).This loaded members assisted parts 2623E is the part that loaded members 263 is supported well with respect to a pair of loaded members fixed part 2612I, 2623D.

Loaded members 263 as shown in Fig. 4 or Fig. 5, is made of volute spring, a distolateral loaded members fixed part 2612I who is supported in base portion 261, and the other end is supported in the loaded members fixed part 2623D of slide section 262.That is, this loaded members 263 right, makes slide section 262 load to rear side (bonding station P1 side) with respect to base portion 261.

A pair of fixed component 264 is that the slide block that slide section 262 is installed on base portion 261 is provided with member in the 2612G of portion.These fixed components 264, as as shown in Fig. 4 or Fig. 5, by the gib screw 2641 of a pair of fixed part 1612K that is bolted in base portion 261 with make the fore-end of gib screw 2641 can insert packing ring 2642 logical and that have an outer shape bigger to be constituted than the width dimensions of the orbit hole 2612A of slide section 262.

(structure of 4-2. light cover)

Fig. 8 is the stereographic map of the structure of expression light cover 27.Particularly, Fig. 8 is the figure that observes light cover 27 from lower side.In addition, in Fig. 8, the left side is the front face side of projector 1, and the right side is the rear side of projector 1.

Light cover 27 is members of the end face peristome 261A of capping light cover switching portion 26, as shown in FIG. 8, possesses matrix 271 and copulational protuberance 272.

Matrix 271 as shown in FIG. 8, is made of the plate body of overlooking the essentially rectangular shape corresponding to end face peristome 261A.

In this matrix 271, on the lower side end face, as shown in FIG. 8, be formed with the 2nd rising portions 2711 of overlooking essentially rectangular frame shape that uprightly is provided with to the lower side from the periphery ora terminalis.The 2nd rising portions 2711, when light cover 27 was installed on light cover switching portion 26, its outer peripheral face was contacted with the inner peripheral surface of the 1st rising portions 2611 of light cover switching portion 26.

In the 2nd rising portions 2711, on the outer peripheral face of side (among Fig. 8, the left side), a pair of the 1st stop recess 2612A corresponding to light cover switching portion 26 is formed with to the side-prominent a pair of teat 2711A in front in front.And a pair of teat 2711A when light cover 27 is installed on light cover switching portion 26, inserts and feeds a pair of the 1st stop recess 2612A.

In addition, in this matrix 271, on the lower side end face, as shown in FIG. 8,, be formed with outstanding to the lower side the 2nd rib spare 2712 of overlooking essentially rectangular frame shape corresponding to the 1st rib spare 2612D of light cover switching portion 26.And, the 2nd rib spare 2712, when light cover 27 was installed on light cover switching portion 26, its outer peripheral face was contacted with the inner peripheral surface of the 1st rib spare 2612D.

On the outer peripheral face of the 2nd rib spare 2712, the position corresponding to the 2nd stop recess 2612E of light cover switching portion 26 as shown in FIG. 8, is formed with the retention tab 2712A that engages with the 2nd stop recess 2612E.

This retention tab 2712A has roughly triangular prism shape, and it has the dip plane 2712A1 to the direction inclination of leaving from the 2nd rib spare 2712 from the lower side ora terminalis to the upper side ora terminalis.

And then in this matrix 271, in the inboard of the 2nd rib spare 2712 of lower side end face, the mode of extending with direction and/or fore-and-aft direction to the left and right is formed with the stiffening rib spare 2713 of strengthening matrix 271.

Fig. 9 is the stereographic map of the structure of expression copulational protuberance 272.Particularly, Fig. 9 is in Fig. 8, the figure behind the amplification copulational protuberance 272.

Copulational protuberance 272, in the lower side end face of matrix 271, uprightly be arranged at position, as shown in Fig. 8 or Fig. 9 corresponding to the otch 2612C of light cover switching portion 26, have to the lower side outstanding, the projected direction fore-end is to the crooked hook shape of front face side (among Fig. 8, Fig. 9, the left side) simultaneously.And this copulational protuberance 272 is being installed on light cover 27 under light cover switching portion 26 states, inserts to feed otch 2612C and the 1st through hole 2624A, and is engaged in the junction surface 2623A of slide section 262.

On the fore-end of this copulational protuberance 272, the end face of front face side (among Fig. 8, Fig. 9, the left side) becomes from the lower side ora terminalis to the upper side ora terminalis to the oblique dip plane 2721 of front inclination.This dip plane 2721 is corresponding with being tilted to of the dip plane 2623B of slide section 262, and when light cover 27 is installed on light cover switching portion 26, is slidably connected to the part of dip plane 2623B.

In addition, on the fore-end of this copulational protuberance 272, the end face of rear side (among Fig. 8, Fig. 9, the right side) becomes from the lower side ora terminalis to the upper side ora terminalis to the oblique projection dip plane 2722 of back side inclination.This projection dip plane 2722, be corresponding with the inclination of a pair of slide section dip plane 2623C of slide section 262, and light cover 27 is being installed under the state of light cover switching portion 26, in that slide section 262 is moved under the situation of front face side (unengaged position P2 side), be slidably connected to the part of a pair of slide section dip plane 2623C.

(the 5. opening and closing operations of light cover)

Secondly, the opening and closing operations with respect to above-mentioned light cover switching portion 26 to light cover 27 describes.

Figure 10 A, Figure 10 B and Figure 11 are the figure with respect to the opening and closing operations of light cover switching portion 26 that is used to illustrate light cover 27.Particularly, Figure 10 A is a state of representing to have installed with respect to light cover switching portion 26 light cover 27, that is, and and the sectional view of junction surface 2623A and copulational protuberance 272 articulate states.Figure 10 B then is expression takes off state behind the light cover 27 with respect to light cover switching portion 26,, removes the sectional view of state of the joint of junction surface 2623A and copulational protuberance 272 that is.In addition, in Figure 10 A and Figure 10 B, the left side is the front face side of projector 1, and the right side is the rear side of projector 1.In addition, Figure 11 is a stereographic map of observing Figure 10 B from the upper side of projector 1.

Following, the fitting operation when with respect to light cover switching portion 26 light covers 27 being installed be described in order, and take off operation when light cover 27 takes off in light cover switching portion 26.

(fitting operation of 5-1. light cover)

At first, though omit concrete diagram, the operator inserts a pair of teat 2711A of light cover 27 a pair of the 1st stop recess 2612A of feeding light cover switching portion 26.When light cover 27 was installed, slide section 262 was positioned at bonding station P1 (for example, Figure 10 A) by loaded members 263.Therefore, under above-mentioned state, light cover 27, the dip plane 2721 that becomes copulational protuberance 272 is contacted with the dip plane 2623B of slide section 262, and the rear side end is positioned at the state (for example, the state of Figure 11) of upper side and inclination with respect to top part 21A.

Under this state, the operator, the rear side end of pushing light cover 27 to the lower side, the dip plane 2721 of copulational protuberance 272 is slidably connected to dip plane 2623B thus.At this moment, copulational protuberance 272, the opposing loaded members 263 loading and to front face side (among Figure 10 A, the right side) thus pushing slide section 262 makes it to move.Push the state of the rear side end of light cover 27 to the lower side by continuation, dip plane 2721 moves to lower side with respect to dip plane 2623B, and the pressed state of slide section 262 is removed.And as shown in Fig. 10 A, by the loading of loaded members 263, slide section 262 moves to bonding station P1 side once more, and copulational protuberance 272 and junction surface 2623A engage, thereby with respect to light cover switching portion 26 light cover 27 is installed.

(5-2. light cover take off operation)

At first, though omit concrete diagram, the operator inserts rod member such as screwdrivers from behaviour's functional hole 245 of the shell on the back 24 of projector 1, and pushes the press section 2622 of slide section 262 with the fore-end of aforementioned rod member.Slide section 262, because press section 2622 pushed, the loading of opposing loaded members 263 and move to front face side (among Figure 10 B, the right side).Then, the engagement state of copulational protuberance 272 and junction surface 2623A obtains removing.Make slide section 262 move to unengaged position P2 side (Figure 10 B) by the pressed state that continues press section 2622, a pair of slide section dip plane 2623C of slide section 262 is slidably connected to the projection dip plane 2722 of copulational protuberance 272.And copulational protuberance 272 moves to upper side along slide section dip plane 2623C, and as shown in Figure 11, the rear side end that becomes light cover 27 is positioned at the state of upper side and inclination with respect to top part 21A.

Under this state, the operator, on one side to the rear side end that front face side is pushed light cover 27, make on one side its upward side lift, thus light cover 27 with the cardinal extremity of a pair of teat 2711A part as fulcrum and upward side rotate.Then, with respect to light cover switching portion 26 light cover 27 is taken off.

As described above, in the present embodiment, by making slide section 262 move to the rear side (bonding station P1 (Figure 10 A) side) of projector 1 and the front face side (unengaged position P2 (Figure 10 B) side) of projector 1, and light cover 27 is installed and removed with respect to top part 21A (light cover switching portion 26).Thus, only, can simplify its structure by slide section 262 being installed in the mounting or dismounting that top part 21A just can carry out light cover 27 with respect to top part 21A.

In addition, on slide section 262, be formed with respect to the direction that moves to bonding station P1 of slide section 262 (towards the direction of the rear side of projector 1) plane orthogonal, along with towards top part 21A side and to aforementioned moving direction (with slide section 262 to side that unengaged position P2 moves in the opposite direction) the slide section dip plane 2623C that tilts.Thus, can be when making slide section 262 move to unengaged position P2, slide section dip plane 2623C is slidably connected to the copulational protuberance 272 of light cover 27 and pushes the copulational protuberance 272 of light cover 27 and light cover 27 is lifted to top part 21A side.Therefore, only use 2621 members of slide section, just can realize removing the engagement state of light cover 27 and top part 21A (junction surface 2623A), and the structure that light cover 27 is lifted.

Therefore, can be simply and realize the mounting or dismounting with respect to top part 21A of light cover 27 with simple structure.

At this, because on copulational protuberance 272, also be formed with projection dip plane 2722 corresponding to slide section dip plane 2623C, so projection dip plane 2722 and slide section dip plane 2623C are slipped, can successfully implement moving of slide section 262.Therefore, can successfully implement to take off the operation of light cover 27 with respect to top part 21A.

In addition, because light cover switching portion 26 possesses the loaded members 263 that slide section 262 is loaded to bonding station P1 side, so slide section 262 is loaded to bonding station P1 side always.Thus because slide section 262 among the moving of bonding station P1 side or these 2 directions of unengaged position P2 side, loaded members 263 is implemented to the moving of bonding station P1 side, so moving only enforcement of armrest gets final product to moving of unengaged position P2 side.Therefore, with respect to top part 21A mounting or dismounting light cover 27 time, among the moving of aforementioned 2 directions of slide section 262, moving only enforcement of armrest get final product to moving of unengaged position P2 side, can implement the mounting or dismounting of light cover 27 simply and operate.

And then, on slide section 262, be formed with press section 2622, on the shell on the back 24 that intersects with top part 21A, be formed with behaviour's functional hole 245.Thus, the rod member of screwdriver etc. inserted from external shell 2 outsides by behaviour's functional hole 245 and to feed external shell 2 inside, and with the front end of aforementioned rod member press section 2622 is pushed, can make slide section 262 move to unengaged position P2 side thus simply.

And then, because behaviour's functional hole 245 is formed at shell on the back 24, so compare with for example grasping the formation that functional hole 245 is formed at top part 21A, can reduce the amount that drains to projector 1 outside when driving from the light leak of light supply apparatus 41 by behaviour's functional hole 245 in projector 1.Therefore, can reduce because of light leak and give influence with projected image, can make the beholder watch projected image well.

In addition, installing with respect to top part 21A under the state of light cover 27, the 1st rising portions 2611 of overlooking the frame shape of light cover switching portion 26 and the 2nd rising portions 2711 of overlooking the frame shape of the 1st rib spare 2612D and light cover 27 and the 2nd rib spare 2712 are chimeric respectively.Therefore, by the 1st rib spare 2612D and the 2nd rib spare 2712 and the 1st rising portions 2611 and the 2nd rising portions 2711, can realize the light leak from light supply apparatus 41 is carried out dual structure of covering.Therefore, can prevent that light from draining to projector 1 outside by step peristome 2612B and end face peristome 261A.

At this, the 2nd stop recess 2612E is formed at the inner peripheral surface of the 1st rib spare 2612D, and retention tab 2712A is formed at the outer peripheral face of the 2nd rib spare 2712.Thus, can keep by the chocking construction of retention tab 2712A and the 2nd stop recess 2612E and make slide section 262 be positioned at unengaged position P2 and make light cover 27 with respect to a little state of opening of top part 21A (at the state shown in Figure 11).Therefore, in projector 1 for (for example to hang vertical attitude, the bottom surface sections 22A of projector 1 is connected to the state of the abutted surface of ceiling etc. mutually) situation under, when taking off light cover 27 with respect to top part 21A making slide section 262 move to unengaged position P2, light cover 27 can not drop, and can implement the operation of taking off of light cover 27 well.

In addition, because by on the 1st rib spare 2612D and the 2nd rib spare 2712, forming above-mentioned chocking construction, can cover light leak by the 1st rib spare 2612D and the 2nd rib spare 2712 as described above, so with for example compare in the formation that copulational protuberance is set on the light cover 27 and on stage portion 2612, forms the hole engage with aforementioned retention tab, can reduce the amount that drains to the light leak of projector 1 outside by above-mentioned chocking construction.

In addition, the present invention is not limited to aforesaid embodiment, is included among the present invention in the distortion of the scope that can reach purpose of the present invention, improvement etc.

In aforementioned embodiments, as the structure that can install and remove light cover 27 with respect to top part 21A, to will being illustrated, but be not limited to this as the formation that the slide section 262 that engages moving part move to the front face side (unengaged position P2 side) of the rear side (bonding station P1 side) of projector 1 and projector 1.For example, also can be made as not make to make and engage moving part and move up in front and back and make it (long side direction of top part 21A) mobile formation on left and right directions.In addition, also the joint moving part can be made as the slip that is not illustrated in aforementioned embodiments and move, but the formation of between bonding station and unengaged position, rotating.

In aforementioned embodiments, grasp functional hole 245 though form on as the shell on the back 24 of the side surface part of intersecting with top part 21A, be not limited to this, also can be formed on slip moving direction that engages moving part or the corresponding side surface part of rotation direction on.For example, also operation can be formed on side surface part 21B, 21C or the fore shell 23 with the hole.

In aforementioned embodiments, light cover switching portion 26 possesses the base portion 261 of slide section of being equipped with 262, but is not limited to this, also can be made as to dispense base portion 261 and the formation of slide section 262 in the inside surface of top part 21A directly is installed.

In aforementioned embodiments, the slide block that the structure of slide section 262 and being used to is provided with slide section 262 is provided with the structure of the 2612G of portion, and the structure that is not limited to describe in aforementioned embodiments also can adopt other structures.

In aforementioned embodiments, though on the 1st rib spare 2612D and the 2nd rib spare 2712, formed chocking construction (retention tab 2712A and the 2nd stop recess 2612E), but be not limited to this, also can on the 1st rising portions 2611 and the 2nd rising portions 2711, form aforementioned chocking construction.In addition, the formation position of retention tab and the 2nd stop recess, the position that is not limited in aforementioned embodiments, describe, for example, also can adopt form retention tab in the 1st rib spare 2612D or the 1st rising portions 2611, form the 2nd stop recess in the formation of the 2nd rib spare 2712 or the 2nd rising portions 2711.

In aforementioned embodiments, though in optic modulating device, adopt the liquid crystal panel 451 of transmission-type, be not limited to this, can adopt the liquid crystal panel of reflection-type, perhaps, also can adopt Digital Micromirror Device (trade mark of Texas Instruments).Under the situation that adopts Digital Micromirror Device, do not need light incident side polarization plates 452 and emitting side polarization plates 453.

In aforementioned embodiments, though only enumerated the example that carries out the preceding throwing type projector of projection from the direction of watching screen, the present invention also can be applied to carry out the rear-projection projector of projection from an opposite side with the direction of watching screen.

Though be used to formation of implementing the best of the present invention etc., disclosed by above record, the present invention is not limited thereto.Promptly, the present invention, though mainly illustrate especially and illustrate for specific embodiment, but only otherwise break away from the scope of technical thought of the present invention and purpose, for above-described embodiment, for shape, material, quantity and other detailed formation, technician's various distortion in addition.

Thereby, define the record of above-mentioned disclosed shape, material etc., for understanding of the present invention being more prone to and recording and narrating illustratively, and non-limiting the present invention, so the record with part or all the member title of qualification of the qualification of avoiding those shapes, material etc. is carried out is also included among the present invention.

Projector of the present invention can be simply and realize the mounting or dismounting with respect to external shell of lid with simple structure, therefore as be used for showing, the projector of home theater and useful.

Claims (6)

1. projector, it possesses light supply apparatus and takes in the above-mentioned light supply apparatus of configuration in the external shell of inside, and modulation carries out enlarging projection from the light beam that above-mentioned light supply apparatus penetrates, and it is characterized in that:

On the top part of above-mentioned external shell, forming the end face peristome with corresponding position, the position of above-mentioned light supply apparatus;

Possess can the above-mentioned end face peristome of capping lid and cover body opening/closing portion, above-mentioned lid can be installed freely with respect to above-mentioned top part mounting or dismounting in above-mentioned cover body opening/closing portion,

Above-mentioned lid has copulational protuberance, and above-mentioned copulational protuberance projects to above-mentioned external shell inside by above-mentioned end face peristome under the state that above-mentioned lid is installed with respect to above-mentioned top part,

Above-mentioned cover body opening/closing portion has the joint moving part, and this joint moving part is arranged on the inside surface of above-mentioned top part and can moves between bonding station and unengaged position,

Above-mentioned joint moving part has the junction surface that engages with above-mentioned copulational protuberance,

Above-mentioned junction surface engages at above-mentioned bonding station with above-mentioned copulational protuberance, above-mentioned junction surface and above-mentioned copulational protuberance do not engage at above-mentioned unengaged position,

On above-mentioned joint moving part, form and engage the moving part dip plane, when making above-mentioned joint moving part move to above-mentioned unengaged position, this joint moving part dip plane is slidably connected to above-mentioned copulational protuberance and above-mentioned copulational protuberance is pushed to above-mentioned top part side, this joint moving part dip plane is with respect to the plane of the moving direction that is orthogonal to this joint moving part, and is oblique to the moving direction inclination of bonding station to above-mentioned unengaged position.

2. according to the described projector of claim 1, it is characterized in that:

On above-mentioned copulational protuberance, form corresponding to above-mentioned joint moving part dip plane and be slidably connected to the projection dip plane of above-mentioned joint moving part dip plane.

3. according to the described projector of claim 1, it is characterized in that:

Above-mentioned cover body opening/closing portion possesses loaded members, and this loaded members is equipped between above-mentioned top part and the above-mentioned joint moving part, and in above-mentioned bonding station side above-mentioned joint moving part is loaded.

4. according to the described projector of claim 1, it is characterized in that:

Above-mentioned joint moving part possesses tabular joint moving part main body that is parallel to above-mentioned top part and the press section that is orthogonal to the moving direction of above-mentioned joint moving part,

Above-mentioned press section be arranged at above-mentioned joint moving part main body and with above-mentioned tabular the surperficial perpendicular of moving part main body that engage,

Be formed with behaviour's functional hole on the side surface part of the above-mentioned top part that is orthogonal to above-mentioned external shell, this behaviour's functional hole is used for making above-mentioned joint moving part move to above-mentioned unengaged position by pushing above-mentioned press section.

5. according to the described projector of claim 1, it is characterized in that:

Above-mentioned cover body opening/closing portion possesses the above-mentioned end face peristome periphery that is formed at above-mentioned top part, the base portion that is used to install above-mentioned joint moving part;

On above-mentioned base portion, form to outstanding with the direction of above-mentioned top part quadrature and be seen as the 1st rib spare of frame shape from vertical view;

On the inside surface of above-mentioned lid, form to outstanding with the direction of above-mentioned lid quadrature and carry out chimeric the 2nd rib spare that is seen as the frame shape from vertical view with above-mentioned the 1st rib spare with respect to above-mentioned top part under the mounted state at above-mentioned lid;

On above-mentioned the 1st rib spare and above-mentioned the 2nd rib spare, form chocking construction, this chocking construction is located under the state of above-mentioned unengaged position at above-mentioned joint moving part, in the position that above-mentioned lid is opened with respect to above-mentioned top part above-mentioned lid is carried out stop.

6. according to any one the described projector in the claim 1～4, it is characterized in that:

Above-mentioned cover body opening/closing portion possesses the above-mentioned end face peristome periphery that is formed at above-mentioned top part, the base portion that is used to install above-mentioned joint moving part;

Above-mentioned base portion, by from above-mentioned end face peristome periphery to outstanding be seen as the 1st rising portions of frame shape and be connected in above-mentioned the 1st rising portions and see that from vertical view planarity ground covers above-mentioned end face peristome and constituted with stage portion that above-mentioned top part extends abreast of above-mentioned external shell private side from vertical view;

Above-mentioned stage portion, have be formed at the little step peristome of corresponding position, the position of above-mentioned light supply apparatus and the above-mentioned end face peristome of open area ratio and to the outside of above-mentioned external shell outstanding and surround above-mentioned step peristome be seen as the 1st rib spare of frame shape from vertical view;

On the inside surface of above-mentioned lid, formation is seen as the 2nd rising portions and the 2nd rib spare of frame shape from vertical view, above-mentioned the 2nd rising portions and the 2nd rib spare are respectively to outstanding with the direction of above-mentioned lid quadrature, and under the mounted state, carry out chimeric respectively with respect to above-mentioned top part with above-mentioned the 1st rising portions and above-mentioned the 1st rib spare at above-mentioned lid.

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